<template>
  <div>
    <el-dialog title="更换头像" v-model="state.isShowDialog" width="769px">
      <div class="cropper-warp">
        <div class="cropper-warp-left">
          <img :src="state.cropperImg" class="cropper-warp-left-img" />
        </div>
        <div class="cropper-warp-right">
          <div class="cropper-warp-right-title">预览</div>
          <div class="cropper-warp-right-item">
            <div class="cropper-warp-right-value">
              <img :src="state.cropperImgBase64" class="cropper-warp-right-value-img" />
            </div>
            <div class="cropper-warp-right-label">100 x 100</div>
          </div>
          <div class="cropper-warp-right-item">
            <div class="cropper-warp-right-value">
              <img :src="state.cropperImgBase64" class="cropper-warp-right-value-img cropper-size" />
            </div>
            <div class="cropper-warp-right-label">50 x 50</div>
          </div>
        </div>
      </div>
      <template #footer>
        <span class="dialog-footer">
          <el-button @click="onCancel" size="default">取 消</el-button>
          <el-button type="primary" @click="onSubmit" size="default">更 换</el-button>
        </span>
      </template>
    </el-dialog>
  </div>
</template>

<script setup lang="ts" name="cropper">
import { reactive, nextTick } from 'vue'
import Cropper from 'cropperjs'
import 'cropperjs/dist/cropper.css'

// 定义变量内容
const state = reactive({
  isShowDialog: false,
  cropperImg: '',
  cropperImgBase64: '',
  cropper: '' as RefType,
})

// 打开弹窗
const openDialog = (imgs: string) => {
  state.cropperImg = imgs
  state.isShowDialog = true
  nextTick(() => {
    initCropper()
  })
}
// 关闭弹窗
const closeDialog = () => {
  state.isShowDialog = false
}
// 取消
const onCancel = () => {
  closeDialog()
}
// 更换
const onSubmit = () => {
  // state.cropperImgBase64 = state.cropper.getCroppedCanvas().toDataURL('image/jpeg');
}
// 初始化cropperjs图片裁剪
const initCropper = () => {
  const letImg = <HTMLImageElement>document.querySelector('.cropper-warp-left-img')
  state.cropper = new Cropper(letImg, {
    viewMode: 1,
    dragMode: 'none',
    initialAspectRatio: 1,
    aspectRatio: 1,
    preview: '.before',
    background: false,
    autoCropArea: 0.6,
    zoomOnWheel: false,
    crop: () => {
      state.cropperImgBase64 = state.cropper.getCroppedCanvas().toDataURL('image/jpeg')
    },
  })
}

// 暴露变量
defineExpose({
  openDialog,
})
</script>

<style scoped lang="scss">
.cropper-warp {
  display: flex;
  .cropper-warp-left {
    position: relative;
    display: inline-block;
    height: 350px;
    flex: 1;
    border: 1px solid var(--el-border-color);
    background: var(--el-color-white);
    overflow: hidden;
    background-repeat: no-repeat;
    cursor: move;
    border-radius: var(--el-border-radius-base);
    .cropper-warp-left-img {
      width: 100%;
      height: 100%;
    }
  }
  .cropper-warp-right {
    width: 150px;
    height: 350px;
    .cropper-warp-right-title {
      text-align: center;
      height: 20px;
      line-height: 20px;
    }
    .cropper-warp-right-item {
      margin: 15px 0;
      .cropper-warp-right-value {
        display: flex;
        .cropper-warp-right-value-img {
          width: 100px;
          height: 100px;
          border-radius: var(--el-border-radius-circle);
          margin: auto;
        }
        .cropper-size {
          width: 50px;
          height: 50px;
        }
      }
      .cropper-warp-right-label {
        text-align: center;
        font-size: 12px;
        color: var(--el-text-color-primary);
        height: 30px;
        line-height: 30px;
      }
    }
  }
}
</style>
